hard 4×4 Set 49 Form Exercise

Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 8, 1, 8], Column headers: [9, 5, 9, 1]

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Answer: Row 3: [27, 15, 27, 3]; Row 8: [72, 40, 72, 8]; Row 1: [9, 5, 9, 1]; Row 8: [72, 40, 72, 8]

SubType
speed-grid
Difficulty
hard
Operation
×
RowHeaders
  • 3
  • 8
  • 1
  • 8
ColHeaders
  • 9
  • 5
  • 9
  • 1
Cells
  • [27,15,27,3]
  • [72,40,72,8]
  • [9,5,9,1]
  • [72,40,72,8]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [6, 8, 1, 5], Column headers: [8, 6, 10, 6]

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Answer: Row 6: [2, 0, 4, 0]; Row 8: [0, 2, 2, 2]; Row 1: [7, 5, 9, 5]; Row 5: [3, 1, 5, 1]

SubType
speed-grid
Difficulty
hard
Operation
-
RowHeaders
  • 6
  • 8
  • 1
  • 5
ColHeaders
  • 8
  • 6
  • 10
  • 6
Cells
  • [2,0,4,0]
  • [0,2,2,2]
  • [7,5,9,5]
  • [3,1,5,1]